We should treat referrer policies found in a <meta csp> the same way as we treat <meta referrer>. There's a bunch of code in place to handle that which makes sure that we never use a resource fetched with the wrong referrer.

Created attachment 8689848[details][diff][review]
bug_1226437_meta_csp_referrer_regression.patch
Jonas, as discussed over IRC speculate meta csp should only set speculative referrer policy and not the *actual* referrer policy.